I have black spots or stripes on my hand nails?

I am worried it might be dangerous, but took a loon on photos and did not find any similar situations.. or:I am worried it might be dangerous, but too

I am worried it might be dangerous, but took a loon on photos and did not find any similar situations..

or:I am worried it might be dangerous, but took a loon on photos and did not find any similar situations..

Tags:hand,worried,